My experience is that a generic ODB reader should give you any manufacturer-specific codes as numeric codes, and then a Google search for “ODB” + the number (and optionally the manufacturer) should tell you the rest.

Torque worked very well for my Plug-in Prius; in 2013 I used it for quite a while with an old Nook Color tablet running Cyanogenmod and mounted (for very loosely defined values of “mounted”) in the glovebox.

OBDCII reading is only half of what I need to do, though. This tool looks good for my less technical friends and family but I need to write to my car’s computing infrastructure, which means I need a keyboard, so I use a laptop and a USB-connected ELM327 dongle.